/* * Copyright (C) 2018 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <dirent.h> #include <stdio.h> #include <stdlib.h> #include <memory> #include <string> #include <vector> #include <android-base/file.h> #include <android-base/strings.h> #include <gtest/gtest.h> #include <png.h> #include "minui/minui.h" #include "private/resources.h" static const std::string kLocale = "zu"; static const std::vector<std::string> kResourceImagesDirs{ "res-mdpi/images/", "res-hdpi/images/", "res-xhdpi/images/", "res-xxhdpi/images/", "res-xxxhdpi/images/", }; static int png_filter(const dirent* de) { if (de->d_type != DT_REG || !android::base::EndsWith(de->d_name, "_text.png")) { return 0; } return 1; } // Finds out all the PNG files to test, which stay under the same dir with the executabl.. static std::vector<std::string> add_files() { std::vector<std::string> files; for (const std::string& images_dir : kResourceImagesDirs) { static std::string exec_dir = android::base::GetExecutableDirectory(); std::string dir_path = exec_dir + "/" + images_dir; dirent** namelist; int n = scandir(dir_path.c_str(), &namelist, png_filter, alphasort); if (n == -1) { printf("Failed to scandir %s: %s\n", dir_path.c_str(), strerror(errno)); continue; } if (n == 0) { printf("No file is added for test in %s\n", dir_path.c_str()); } while (n--) { std::string file_path = dir_path + namelist[n]->d_name; files.push_back(file_path); free(namelist[n]); } free(namelist); } return files; } class ResourcesTest : public testing::TestWithParam<std::string> { public: static std::vector<std::string> png_list; protected: void SetUp() override { png_ = std::make_unique<PngHandler>(GetParam()); ASSERT_TRUE(png_); ASSERT_EQ(PNG_COLOR_TYPE_GRAY, png_->color_type()) << "Recovery expects grayscale PNG file."; ASSERT_LT(static_cast<png_uint_32>(5), png_->width()); ASSERT_LT(static_cast<png_uint_32>(0), png_->height()); ASSERT_EQ(1, png_->channels()) << "Recovery background text images expects 1-channel PNG file."; } std::unique_ptr<PngHandler> png_{ nullptr }; }; // Parses a png file and tests if it's qualified for the background text image under recovery. TEST_P(ResourcesTest, ValidateLocale) { std::vector<unsigned char> row(png_->width()); for (png_uint_32 y = 0; y < png_->height(); ++y) { png_read_row(png_->png_ptr(), row.data(), nullptr); int w = (row[1] << 8) | row[0]; int h = (row[3] << 8) | row[2]; int len = row[4]; EXPECT_LT(0, w); EXPECT_LT(0, h); EXPECT_LT(0, len) << "Locale string should be non-empty."; EXPECT_NE(0, row[5]) << "Locale string is missing."; ASSERT_GE(png_->height(), y + 1 + h) << "Locale: " << kLocale << " is not found in the file."; char* loc = reinterpret_cast<char*>(&row[5]); if (matches_locale(loc, kLocale.c_str())) { EXPECT_TRUE(android::base::StartsWith(loc, kLocale)); break; } for (int i = 0; i < h; ++i, ++y) { png_read_row(png_->png_ptr(), row.data(), nullptr); } } } std::vector<std::string> ResourcesTest::png_list = add_files(); INSTANTIATE_TEST_CASE_P(BackgroundTextValidation, ResourcesTest, ::testing::ValuesIn(ResourcesTest::png_list.cbegin(), ResourcesTest::png_list.cend()));